Fabrics, felts or loose covers

Fabrics, felts or loose covers · Cooperative Patent Classification (CPC)

Chemical and metallurgical processes, compounds, and materials.

Related technology areas

Mapped technology topics for this CPC code.

CPC classification statistics
MetricValue
CPC codeC03B40/005
Official title{Fabrics, felts or loose covers}
Display labelFabrics, felts or loose covers
Total patents82

Filing trend

Year-over-year patent counts classified under this CPC code.

Filing activity over the last five years is rapidly declining.

Patents filed per year
YearPatents
201514
201611
20178
20185
20199
202010
20218
20227
20235
20243
20251
20261

Representative patents

Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.

Frequently asked questions

Answers are generated from the same data shown on this page.

What is CPC C03B40/005?
CPC C03B40/005 is the Cooperative Patent Classification code for “Fabrics, felts or loose covers.”
How many patents are filed under CPC C03B40/005 (Fabrics, felts or loose covers)?
Our database includes 82 publications tagged with this CPC code.
Is patent activity under CPC C03B40/005 growing?
Publication counts under this code: 3 in 2024 vs 1 in 2025 (latest complete years).